Milankovitch cycles

E179504

astronomical theory climate forcing mechanism orbital cycles

Milankovitch cycles are long-term variations in Earth’s orbit and axial tilt that drive natural climate fluctuations, including the timing of ice ages.

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All labels observed (7)

Label	Occurrences
Milankovitch cycles canonical	8
Earth axial tilt	1
Ice Ages and Astronomical Causes	1
Ice Ages and Astronomical Causes research	1
Kanon der Erdbestrahlung und seine Anwendung auf das Eiszeitenproblem	1
Milankovitch climate cycles	1
Milankovitch orbital cycles	1

How this entity was disambiguated

This entity first appeared as the object of triple T1572228 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Milankovitch cycles
Context triple: [Quaternary period, climateDriver, Milankovitch cycles]

A. Milanković calendar
The Milanković calendar is a 20th-century reform of the Julian calendar, designed by Serbian scientist Milutin Milanković to more accurately align the civil year with the solar year and used by some Eastern Orthodox churches.
B. Cenozoic glaciations
Cenozoic glaciations are a series of major ice age cycles during the Cenozoic Era that saw extensive growth and retreat of continental ice sheets, profoundly shaping Earth’s climate and landscapes.
C. Eocene–Oligocene climate transition
The Eocene–Oligocene climate transition was a major global cooling event around 34 million years ago that marked the shift from a greenhouse to an icehouse Earth, including the formation of large Antarctic ice sheets.
D. Laplace resonance
Laplace resonance is a three-body orbital resonance in which the orbital periods of Jupiter’s moons Io, Europa, and Ganymede are linked in a precise 1:2:4 ratio, strongly affecting their dynamics and internal heating.
E. Saros cycle
The Saros cycle is an approximately 18-year period after which nearly identical solar and lunar eclipses repeat, due to the alignment of the Earth, Moon, and Sun.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Milankovitch cycles
Target entity description: Milankovitch cycles are long-term variations in Earth’s orbit and axial tilt that drive natural climate fluctuations, including the timing of ice ages.

A. Milanković calendar
The Milanković calendar is a 20th-century reform of the Julian calendar, designed by Serbian scientist Milutin Milanković to more accurately align the civil year with the solar year and used by some Eastern Orthodox churches.
B. Cenozoic glaciations
Cenozoic glaciations are a series of major ice age cycles during the Cenozoic Era that saw extensive growth and retreat of continental ice sheets, profoundly shaping Earth’s climate and landscapes.
C. Eocene–Oligocene climate transition
The Eocene–Oligocene climate transition was a major global cooling event around 34 million years ago that marked the shift from a greenhouse to an icehouse Earth, including the formation of large Antarctic ice sheets.
D. Laplace resonance
Laplace resonance is a three-body orbital resonance in which the orbital periods of Jupiter’s moons Io, Europa, and Ganymede are linked in a precise 1:2:4 ratio, strongly affecting their dynamics and internal heating.
E. Saros cycle
The Saros cycle is an approximately 18-year period after which nearly identical solar and lunar eclipses repeat, due to the alignment of the Earth, Moon, and Sun.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	astronomical theory ⓘ climate forcing mechanism ⓘ orbital cycles ⓘ
affects	Earth climate ⓘ glacial–interglacial cycles ⓘ insolation ⓘ seasonal distribution of solar radiation ⓘ timing of ice ages ⓘ
causes	changes in ice sheet mass balance ⓘ slow natural climate fluctuations ⓘ variations in high-latitude summer insolation ⓘ
describes	long-term variations in Earth’s orbit and tilt ⓘ
developedIn	20th century ⓘ
distinctFrom	anthropogenic climate change ⓘ
explains	orbital forcing of climate ⓘ periodicity of ice ages ⓘ
field	astronomy ⓘ climatology ⓘ geophysics ⓘ
hasComponent	eccentricity cycle ⓘ obliquity cycle ⓘ precession cycle ⓘ
hasEccentricityPeriod	about 100,000 years ⓘ about 400,000 years ⓘ
hasObliquityPeriod	about 41,000 years ⓘ
hasPrecessionPeriod	about 19,000 years ⓘ about 23,000 years ⓘ
involves	axial precession ⓘ changes in axial tilt ⓘ changes in orbital eccentricity ⓘ climatic precession ⓘ precession of the equinoxes ⓘ
isPartOf	Earth–Sun orbital dynamics ⓘ
namedAfter	Milutin Milanković ⓘ
operatesOn	Earth axial precession ⓘ linked to: Earth Orientation Parameters Earth axial tilt ⓘ Earth orbit ⓘ
relatedTo	Pleistocene ice ages ⓘ linked to: Pleistocene epoch Quaternary glaciation ⓘ orbital forcing ⓘ
supportedBy	foraminifera oxygen isotope data ⓘ ice core records ⓘ marine sediment cores ⓘ
theorizedBy	Milutin Milanković ⓘ
timeScale	hundreds of thousands of years ⓘ tens of thousands of years ⓘ
usedIn	Quaternary climate studies ⓘ paleoclimatology ⓘ

How these facts were elicited

Referenced by (14)

Full triples — surface form annotated when it differs from this entity's canonical label.

Quaternary period → climateDriver → Milankovitch cycles ⓘ

Holocene climatic optimum → hasCause → Milankovitch cycles ⓘ

Cenozoic glaciations → drivenBy → Milankovitch cycles ⓘ

Milutin Milanković → knownFor → Milankovitch cycles ⓘ

Milutin Milanković → notableWork → Kanon der Erdbestrahlung und seine Anwendung auf das Eiszeitenproblem ⓘ